CPX1147 Features: * Most controllable CP Hammer available * Ideal for complete body shop work * Positive action trigger for precise control over speed range * Versatile-handles widest range of applications * Heavy-Duty Air Hammer Specifications: * Good for front end, exhaust, frame, body work, etc. Shank size; .401"; bore: 9/16"; stroke: 3.13"; 2000 blows per minute; average air consumption: 2.13 cfm; air inlet thread: 1/4" NPTF; minimum hose size: 3/8"; sound dBA: 91. Hammer weighs just 3.33 lbs. Warranty: * 1 yr warranty on material and workmanship